Nickels, W., McHugh, J., & McHugh, S. M. (2002). Understanding business (6th ed.). McGraw-hill..
芝加哥风格引文Nickels, William, James McHugh, 与 Susan M. McHugh. Understanding Business. 6th ed. Boston: McGraw-hill., 2002.
MLA引文Nickels, William, et al. Understanding Business. 6th ed. McGraw-hill., 2002.
警告：这些引文格式不一定是100％准确.